HammerHead Revisions and Issues

***jradomski*** · 16th July 2007, 03:39

Quote: (Originally Posted by JPJones)

It's in the menu on the new software and I assume it works.

You can cal at altitude (I got him to add that) but it does not do altitude decopression calculations..

SkinAndScuba · 16th July 2007, 21:55

Quote: (Originally Posted by JPJones)

It's in the menu on the new software and I assume it works.

Last time I had email from Kevin he said that the altitude calibration was added and working, but that the decompression would not correct for altitude.

jhaaja · 27th July 2007, 06:28

Is it possible/wise to use NiMH-cells with Hammerhead? There are quite good AA sized cells on the market (mAh wise), but the voltage is still the same

JH

vytautas · 12th December 2007, 08:41

[quote=paulraymaekers;53784]hello all: the battery system in the primary

there is an easy system to work around the batt problem, but it needs a new housing with 2 batt compartments, and the software must be able to display the batt voltage

The other option is to use dual batteries one 6V in the lid (like in classic inspiration) and lithium 3.6V in handset. Cable from handset has 8 wires, 6 used for cells and 2 available for 6 volt battery located in the lid. Use of two shotky diodes (low voltage drop ~0.5V) to separate bateries and that's it. If 6v batery in the lid fails (exhausted) 3.6V lithium takes over giving reasonably time to finish dive and replace 6v battery.
This is the way I am going to modify my HH.

***jradomski*** · 12th December 2007, 09:13

[quote=vytautas;156710]

Quote: (Originally Posted by paulraymaekers)

hello all: the battery system in the primary

there is an easy system to work around the batt problem, but it needs a new housing with 2 batt compartments, and the software must be able to display the batt voltage

The other option is to use dual batteries one 6V in the lid (like in classic inspiration) and lithium 3.6V in handset. Cable from handset has 8 wires, 6 used for cells and 2 available for 6 volt battery located in the lid. Use of two shotky diodes (low voltage drop ~0.5V) to separate bateries and that's it. If 6v batery in the lid fails (exhausted) 3.6V lithium takes over giving reasonably time to finish dive and replace 6v battery.
This is the way I am going to modify my HH.

actuall the way it works is that the "2 wires for the solenoid" are not as you suspect.. the positive side ALWAYS has a voltage, the negative side becomes a ground when the solenoid needs firing.. for your idea to work you need to make your power source common with ground from the handset..
Also hooking in a parallel PS is not at easy as you say.. The HH uses some power saving techniques.. the voltage to the solenoid is not constant its around 6v when it starts opening the solenoid but the voltage drops once its open.. So if our external voltage is above this alternate voltage and the external battery cant supply the current the handset WILL NOT be able to fire the solenoid for the enitre period of time necessary..

paulraymaekers · 12th December 2007, 10:00

[quote=jradomski;156713]

Quote: (Originally Posted by vytautas)

actuall the way it works is that the "2 wires for the solenoid" are not as you suspect.. the positive side ALWAYS has a voltage, the negative side becomes a ground when the solenoid needs firing.. for your idea to work you need to make your power source common with ground from the handset..
Also hooking in a parallel PS is not at easy as you say.. The HH uses some power saving techniques.. the voltage to the solenoid is not constant its around 6v when it starts opening the solenoid but the voltage drops once its open.. So if our external voltage is above this alternate voltage and the external battery cant supply the current the handset WILL NOT be able to fire the solenoid for the enitre period of time necessary..

eeuuh, I think that post from me is... 2 years old?? more than 100.000 posts ago :-)

and at that time Kevin suplied me units with the wires internally so that I could hook on a second PS

regards
paul

***jradomski*** · 12th December 2007, 10:20

[quote=paulraymaekers;156718]

Quote: (Originally Posted by jradomski)

eeuuh, I think that post from me is... 2 years old?? more than 100.000 posts ago :-)

and at that time Kevin suplied me units with the wires internally so that I could hook on a second PS

regards
paul

Paul,
My response was to the fellow that quoted you.. I am speaking about an unaltered HH and what problems he will run into... Yours was probably special...

It can be done but he will need a way to monitor his external voltage and disable it totally once it reaches a certain threshold..

vytautas · 14th December 2007, 08:06

[quote=paulraymaekers;156718]

Quote: (Originally Posted by jradomski)

and at that time Kevin suplied me units with the wires internally so that I could hook on a second PS

regards
paul

Paul seems that you already solved the problem we discuss. Can you explain how alternate PS was connected?

regards
Vytas

heyydude · 14th December 2007, 12:43

What Paul (rEvo) asked us to do when he first purchased Hammerhead electronics was to give him a 2 pin Power Connector using the 2 unused conductors in our 8 conductor Primary Cable. He then connected them to an auxillary power supply, so he could then power the Primary from a big battery.

We can do the same for any company who wants to power the HH from a separate source.

Just one of the ways in which our system is versatile...

Take care,

Kevin Juergensen
Juergensen Marine, Inc.

Shaunzxr · 5th May 2008, 21:31

Did a 75m dive today.
Delrin computers
40mins into dive, on the ascent HUD flashed red at me and I noticed primary was dead.

Ran the unit manually and after 5 mins the primary came back on. It reset itself and displayed no stop.

The batteries were new and worked fine after the problem.
There was no sign of corrosion when I opened the unit.

I feel this is a serious problem and wondered if anyone else had this on the delrin handsets

16th July 2007, 03:39	#111 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,004	Re: HammerHead Revisions and Issues Quote: (Originally Posted by JPJones) It's in the menu on the new software and I assume it works. You can cal at altitude (I got him to add that) but it does not do altitude decopression calculations.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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16th July 2007, 21:55	#112 (permalink)
SkinAndScuba New Member Current Rebreather/s: Optima Other Rebreather/s: Optima Join Date: Oct 2006 Location: South Africa Three Rivers Posts: 40	Re: HammerHead Revisions and Issues Quote: (Originally Posted by JPJones) It's in the menu on the new software and I assume it works. Last time I had email from Kevin he said that the altitude calibration was added and working, but that the decompression would not correct for altitude. __________________ Kenneth Wessels #19799 Skin & Scuba The only South African Optima diver 2007/01-2008/07, and to my knowledge the only Africa Optima diver.
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27th July 2007, 06:28	#113 (permalink)
jhaaja Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Mar 2005 Location: Finland Posts: 884	Re: HammerHead Revisions and Issues Is it possible/wise to use NiMH-cells with Hammerhead? There are quite good AA sized cells on the market (mAh wise), but the voltage is still the same JH
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12th December 2007, 08:41	#114 (permalink)
vytautas New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Nov 2007 Location: Lithuania Posts: 2	Re: HammerHead Revisions and Issues [quote=paulraymaekers;53784]hello all: the battery system in the primary there is an easy system to work around the batt problem, but it needs a new housing with 2 batt compartments, and the software must be able to display the batt voltage The other option is to use dual batteries one 6V in the lid (like in classic inspiration) and lithium 3.6V in handset. Cable from handset has 8 wires, 6 used for cells and 2 available for 6 volt battery located in the lid. Use of two shotky diodes (low voltage drop ~0.5V) to separate bateries and that's it. If 6v batery in the lid fails (exhausted) 3.6V lithium takes over giving reasonably time to finish dive and replace 6v battery. This is the way I am going to modify my HH.
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12th December 2007, 09:13	#115 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,004	Re: HammerHead Revisions and Issues [quote=vytautas;156710] Quote: (Originally Posted by paulraymaekers) hello all: the battery system in the primary there is an easy system to work around the batt problem, but it needs a new housing with 2 batt compartments, and the software must be able to display the batt voltage The other option is to use dual batteries one 6V in the lid (like in classic inspiration) and lithium 3.6V in handset. Cable from handset has 8 wires, 6 used for cells and 2 available for 6 volt battery located in the lid. Use of two shotky diodes (low voltage drop ~0.5V) to separate bateries and that's it. If 6v batery in the lid fails (exhausted) 3.6V lithium takes over giving reasonably time to finish dive and replace 6v battery. This is the way I am going to modify my HH. actuall the way it works is that the "2 wires for the solenoid" are not as you suspect.. the positive side ALWAYS has a voltage, the negative side becomes a ground when the solenoid needs firing.. for your idea to work you need to make your power source common with ground from the handset.. Also hooking in a parallel PS is not at easy as you say.. The HH uses some power saving techniques.. the voltage to the solenoid is not constant its around 6v when it starts opening the solenoid but the voltage drops once its open.. So if our external voltage is above this alternate voltage and the external battery cant supply the current the handset WILL NOT be able to fire the solenoid for the enitre period of time necessary.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated. Last edited by jradomski : 12th December 2007 at 09:16.
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12th December 2007, 10:00	#116 (permalink)
paulraymaekers rEvo's daddy Current Rebreather/s: rEvo Other CCR Home Build Other Rebreather/s: rEvo Other CCR Home Build Join Date: May 2005 Location: belgium Posts: 1,499	Re: HammerHead Revisions and Issues [quote=jradomski;156713] Quote: (Originally Posted by vytautas) actuall the way it works is that the "2 wires for the solenoid" are not as you suspect.. the positive side ALWAYS has a voltage, the negative side becomes a ground when the solenoid needs firing.. for your idea to work you need to make your power source common with ground from the handset.. Also hooking in a parallel PS is not at easy as you say.. The HH uses some power saving techniques.. the voltage to the solenoid is not constant its around 6v when it starts opening the solenoid but the voltage drops once its open.. So if our external voltage is above this alternate voltage and the external battery cant supply the current the handset WILL NOT be able to fire the solenoid for the enitre period of time necessary.. eeuuh, I think that post from me is... 2 years old?? more than 100.000 posts ago :-) and at that time Kevin suplied me units with the wires internally so that I could hook on a second PS regards paul __________________ www.rEvo-rebreathers.com .... the earth is flat, Elvis is alive, and radial scrubbers give longer dwell time than axials...
(Online)

12th December 2007, 10:20	#117 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,004	Re: HammerHead Revisions and Issues [quote=paulraymaekers;156718] Quote: (Originally Posted by jradomski) eeuuh, I think that post from me is... 2 years old?? more than 100.000 posts ago :-) and at that time Kevin suplied me units with the wires internally so that I could hook on a second PS regards paul Paul, My response was to the fellow that quoted you.. I am speaking about an unaltered HH and what problems he will run into... Yours was probably special... It can be done but he will need a way to monitor his external voltage and disable it totally once it reaches a certain threshold.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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14th December 2007, 08:06	#118 (permalink)
vytautas New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Nov 2007 Location: Lithuania Posts: 2	Re: HammerHead Revisions and Issues [quote=paulraymaekers;156718] Quote: (Originally Posted by jradomski) and at that time Kevin suplied me units with the wires internally so that I could hook on a second PS regards paul Paul seems that you already solved the problem we discuss. Can you explain how alternate PS was connected? regards Vytas
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14th December 2007, 12:43	#119 (permalink)
heyydude King of the Geeks Current Rebreather/s: MK 15.X Optima Other CCR Other Rebreather/s: Other CCR Join Date: May 2005 Location: Addison, Pennsylvania Posts: 358	Re: HammerHead Revisions and Issues What Paul (rEvo) asked us to do when he first purchased Hammerhead electronics was to give him a 2 pin Power Connector using the 2 unused conductors in our 8 conductor Primary Cable. He then connected them to an auxillary power supply, so he could then power the Primary from a big battery. We can do the same for any company who wants to power the HH from a separate source. Just one of the ways in which our system is versatile... Take care, Kevin Juergensen Juergensen Marine, Inc.
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5th May 2008, 21:31	#120 (permalink)
Shaunzxr Inspo Luver Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Apr 2005 Location: UK, midlands Posts: 87	Re: HammerHead Revisions and Issues Did a 75m dive today. Delrin computers 40mins into dive, on the ascent HUD flashed red at me and I noticed primary was dead. Ran the unit manually and after 5 mins the primary came back on. It reset itself and displayed no stop. The batteries were new and worked fine after the problem. There was no sign of corrosion when I opened the unit. I feel this is a serious problem and wondered if anyone else had this on the delrin handsets
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